General Description
BD555A1AFV is a LED driver best for LED lighting applications. It supports dimming. Constant current switching controller for AC/DC buck converter is accumulated inside. By choosing external MOS Transistor, small～large power of LED can be driven. The driver is adoptable to a wide range of lighting from small light such as spotlights to large one like base lights.

FEATUREs
■ Highly efficient Buck AC/DC converter
■ Primary control without feedback circuit
■ High accuracy LED current output by LED average control
■ Capacitor controller for Electrolytic free design
■ Fixed switching frequency
■ Built-in regulator for inner power supply
■ Built-in LED open detection (shutdown type)
■ Built-in UVLO detection
■ Built-in thermal shut-down function

APPLICATIONs
■ Spot light without dimming
■ Desk ramp without dimming
■ Down light without dimming
■ Base light without dimming